☉ 镀金 【dùjīn】
　　[ water-gild ] 附金于[金属表面]，其法是先用金汞薄薄地镀上一层，随后加热使汞挥发。
　　[ gold-plate ] 用金来电镀。
　　[ get gilded formerly said of students who went abroad to study in order to enhance their social status ] 比喻为虚名而到某地进行所谓的深造或锻炼。